ie09@vaxb.acs.unt.edu (07/17/90)
So if the phone company tries to trace a call that originated from, say a college dorm, all they would get if the number to that dorms switchboard? I think I have found the source of my annoying calls. [Moderator's Note: But something you should remember is the trace need not stop at that point. Either a manual or automatic switchboard at the dorm can still be traced as well. Once at UC, a telco guy came in and put a tap on an extension on the campus. Calls in or out through the main switchboard would trigger the little device on the line, and tape-record the call. And when the guy put the tap on the line, Mrs. Henderson saw me watching him and told me to keep my mouth shut and say nothing about it to the owner of that extension, 'or you will get in trouble too...'. I said nothing, and a week or so later the tap was removed. PT]
dmr@csli.stanford.edu (Daniel M. Rosenberg) (07/20/90)
In <9892@accuvax.nwu.edu> ie09@vaxb.acs.unt.edu writes: >So if the phone company tries to trace a call that originated from, >say a college dorm, all they would get if the number to that dorms >switchboard? I think I have found the source of my annoying calls. An organization I work for at the University has the periodic need to trace phone calls through the Stanford DMS-100 switch. The last time we did it, a call went from Pac Bell land through to Stanford, and it took forty minutes to trace (after calling 911). Things are supposed to be set up now so that the trace works almost instantly, through special lines to the E911 center that have been discussed here before. (CLID? ANI? Some funky acronym.) So anyway, for 911 (at least), yes, you can get the number of an "extension" off of some PBX's. # Daniel M. Rosenberg // Stanford CSLI // Chew my opinions, not Stanford's. # dmr@csli.stanford.edu // decwrl!csli!dmr // dmr%csli@stanford.bitnet